Please help need to get this right

Suppose investors can earn a return of 2% per 6 months on a treasury note with 6 months remaining until maturity. the face value of the t-bill is $10,000. what price would you expect a 6-month maturity treasury bill to sell for? (round your answer to 2 decimal places. omit the "$" sign in your response.)

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5